Question:
Cobalt-57 is radioactive, emitting β-particles. The half life for this is 270 days. If 100 mg of this is kept in an ' open container the mass of Cobalt - 57 after 540 days will be
Cobalt-57 is radioactive, emitting β-particles. The half life for this is 270 days. If 100 mg of this is kept in an ' open container the mass of Cobalt - 57 after 540 days will be
Updated On: Sep 15, 2024
- 50 mg
- \((\frac{50}{\sqrt2})\)mg
- 25 mg
- Zero
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The correct option is (C) : 25 mg
Was this answer helpful?
0
0
Questions Asked in BCECE exam
- In a Bowler's solution containing the same concentrations of B- and HB, the ratio of KB to B- is 10-10. The pH of the Bowler's solution will be:
- BCECE - 2025
- Buffer Solutions
- The bond dissociation energies of gaseous H2, Cl2, and HCl are 104, 58, and 103 kcal, respectively. The enthalpy of formation of HCl gas would be:
- BCECE - 2025
- Enthalpy change
- The best indicator for titrating 0.1 N Na2CO3 against 0.1 N HCl is:
- BCECE - 2025
- Acids and Bases
- Benzene on ozonolysis followed by reaction with Zn + H2O gives:
- BCECE - 2025
- Nomenclature Of Organic Compounds
- What is the enthalpy of neutralization for CH3COOH + NaOH?
- BCECE - 2025
- Enthalpy change
View More Questions